Disk harrow bearing



A ril 13, 1937. R. J. ALTGELT ET AL DISK HARROW BEARING Filed March 22 Z08 M JM 7 R Dauend PM A TTOR NE) Patented Apr. 13, 1937 PATENT OFFICEDISK HARROW BEARING Rudolph J. Altgelt and William D. Dewend, SouthBend, Ind., assignors to Oliver Farm Equipment Company,

Delaware a corporation of Application March 22, 1933, Serial No. 662,044

8 Claims.

The present invention is directed generally to disk harrows, but moreparticularly to a specific form of disk harrow bearing.

The primary object of the invention is to pro- Vide a novel and improvedbearing for disk harrows of the wood bushing type which will increasethe life of the bearing and reduce to a minimum the number of repairs orreplacements now required.

A still further object of the present invention is to provide a noveland improved form of diskharrow bearing of the wood bushing type inwhich the wood bushing thereof extends beyond the housing of the bearingin such a manner that the entire end surface of the wood bearing must beworn off before there is any metal to metal contact between the spindleand the housing of the bushing.

A still further object of the invention is to provide a novel andimproved form of disk harrow bearing of the wood bushing type in whichthe housing is so constructed as to form a shield to prevent thedropping of the sand and dirt into the wood bushing and spindle.

A further object of the invention is to provide,

a novel and improved disk harrow bearing of the wood type constructionin which the shield portion of the housing is positioned a substantialdistance from the wood bushing and spindle of the disk so as to permit asubstantial wearing surface in a radial direction before the flange ofthe spindle contacts the shield.

A still further object of the invention is to provide a novel andimproved disk harrow bearing of the wood type in which the end thrustflange of the spindle is inclined in a direction away from the woodbearing so as to direct the material or dirt away from the wood bushing.These and other objects are accomplished by providing a construction andarrangement of the various parts in the manner hereinafter de- Fig. 5 isa cross sectional view taken on the line 5-5 in Fig. 4. I

The present invention is directed to a wood bushing bearing for diskharrows and embodies a novel bearing construction in which the wood 5bushing or wearing surfaces thereof both for the thrust and radialpressure are increased to a maximum so as to extend the lives of thewood bushing or bearing manifold over the constructions heretofore usedand thereby eliminates to 10 a considerable extent, the repair orreplacement of these bushings.

In illustrating one form of our invention, we have shown the same inconnection with fragmentary portions of a harrow frame generally 15indicated by the reference character It] to which are connected bearinghangers or brackets II, which are preferably spaced apart for supportingour improved form of bearing hereinafter described. The lower portionsof each of these 20 hangers II are provided with semi-circular ends I 2.Adjacent one end of these semi-circular portions I2 are inwardlyprojecting annular flanges l3 against which one edge of each of thesemicircular wood bushings l l contact. The other 25 ends of thesemi-circular portions l2 are provided with enlarged overhanging flangesor shields I5. It will be noted that one end of each of thesemi-circular bushings [4 extends beyond the flat surfaces I6 of thesemi-circular portions. l2 of the hangers ll. Secured to thesemi-circular portions l2 are complementary caps generally indicated bythe reference character l8, which in turn, are provided withcorresponding internal annular flanges l3 against which thecomplementary semi-circular bushings l9 abut. The other ends of the capsl8 are similarly provided with overhanging annular shields Hi formingthe continuation of the shield l5 of the semi-circular portions l2 ofeach of the hangers. Likewise, a semi-circular complementary woodbushing l9 extends beyond the flat portion Hi as shown at I1 The bushingI9 is provided with a central bore 20 which extends therethrough and is45 adapted to receive or have seated therein, an inwardly projectingcircular lug 2| which has an aperture therethrough and is adapted toreceive in threaded engagement therewith, an oil cup 22 of any wellknown construction for supplying 50 lubricants to each of the woodbearings. Each of the caps 3 are secured to their complementarysemi-circular portions l2 bymeans of oppositely disposed bolts 23, whichextends through aligned apertures in the respective hangers and caps.

7 wood bushing l4-, l9. The inner surfaces of these flanges 25contact'with vthe outer thrust surfacesof eachof thewood bushings asclearly shown at 26, and engage the entire surface thereof, as clearlyshown in Figs. 3 and 4 of the drawing. These flanges 25 are providedwith a tapered or beveled portion, as shown at 21,

which extends from the periphery of the flange 25 to a point adjacentone of the adjacent disks :8, as shown at29. In this connection, it willbe also noted that the space between the periphery of the flange 25 andthe inner surface of the shield I is considerablefso as to permit woodbushing to have a considerable radial wear before the periphery of theflange 26 contacts with the inner surface of the shield, therebypermitting the wood bushing tojh'ave considerable 50 vention, it willbereadily seen that by arranging 55 surface of the wooden bushing, asubstantial wearwear before the flange contacts with the shield. Thedisk 28 is secured to a shaft or bolt 30 by means of a clamping washer3|. The centerdisks 28 are held in spaced relationwith respect to eachother and withrespect to the outer disk 28 as well as thebearings bymeans of a spacer spool 32. The spindle 24 is provided with an enlargedand axially extending flange .33 which is adapted to contact with theconcave surface of the adjacent disk 28, as shown in Figs. 3.

and 4 of the drawing. Thesemi-circular porj tions 12 as well as thecomplementary caps I8 areprovided with overhanging portiona as shown at34, which lie in iclose'proximity to the concave portions of theadjacent. disks to substantially shield and cover the bearing portionsand preventdirt and. sand and the likeffrom entering the bearing at thisp int. It will be noted that the. bolt or, shaft 30 is provided with ahead 35 which is adapted .toiseat itself in the recess 36 formed in theclamping plate 31. "This bolt extends through each of'the spindles 24 aswell as the spool 3 2 and secures these disks rigidly in position withineach of these improved bear 'ings by means of anut 38.

Summarizing the important features of the inthe wooden bushing so thatthe same extends laterally on one end beyond its normal housing orsupport and that by providing a flangeon the spindle which engages theentireend thrust i'ng' surface ispr'ovided to take up the end thrustwear before it is necessary to replace the wooden bearing or until theflange'on the'spindle contacts the metal of the bearing. It will also be60 noted that by arranging theshield and having the same offset aconsiderable distance'with respect to the periphery of the flange, asubstantial portion of the bearing or bore within the bushing must beworn down before the fiangeor periphery 5 thereof contacts with theshield. This arrangement reduces to'afminimum the necessity ofreplacin'g'the wooden bushings. f I While in" the above specification Wehave described oneembodiment which our invention may 70 assume inpractice, itvwill ofcourse,be under- 7 5 secure by Letters Patent is:

1. A bearing for a disk harrow spindle coniprising a bracket having asemi-circular portion, a complementary cap secured to said semi-circularportion, a wood bushing mounted between said cap and said semi-circularportion and hav ing a wearing portion at one end thereof substantiallyequivalent to the amount said bushing protrudes beyond said cap and saidsemi-circular portion, and a spindle having a flange engaging the entireend surface of said wood bushing for sustaining the end thrust exertedby said disk,

the'wearing portion of said wood bushing and said flange sustaining theentire end thrust wear 1 on said bearing.

2. A hearing for a disk harrow spindle comprising a bracket having asemi-circular portion, a complementary cap secured to saidsemi-circularportionya wood'bushing mounted between and having an endthrust wearingportion extending at one end beyond said semi-circularportion and said cap, an} annular shield formedas an integral part ofsaidcap and said semi-Cir: cular portion and extending over the end ofsaid extended portion of saidbushing, and a spindle having a flangeengagingthe entire end surface of said wood bushing for sustainingwholly the circular portion, semi-circular wood bushings V and a spindlehaving a flange engaging the en-' tire; end surface of said woodbushingfor'sustaining the entire end thrust wear on said bearing.

4. A bearing for a disk harrow spindle corn prising a bracket having asemi-circular portion;

a complementary cap secured to said semi-circular portion, a woodbushing mounted between and having a substantial wearing portion at oneend extending beyond said cap and said semicircular. portionfa'spindlejournaled in said bushing, and a flange formed integrally with saidspindle and relatively larger than theendthrust surface of said bushingfor engaging the entire end surface of said bushing for sustaining whollthe end thrust wear on said bearing. 1

'5. A bearing for a disk harrow'spindle comprising a bracket having asemi-circular portion, a complementary cap secured to said.semi-circularportion, a wood bushing mounted between andhaving one endthereof extending beyond said cap and said semi-circular portion, aspindle journaled in said bushing, a flange carried by said spindle andengaging the entire end surface of said bushing, and a shield spacedfrom said bushing and overhanging the same carrie d by said cap and:saidsemi-circular bushing and spaced from the periphery of said flangefor permitting a substantial end thrust wear and radial wear on saidbushing before said flange. contacts said cap and said semi-circular.

1 cular portion, a spindle j ournaled in said bushing,

and a flange carried by said spindle for engaging the entire end surfaceof said bushing for sustaining wholly the end thrust wear on said beara:disk harrow spindle com-' ing, said flange having a tapered portioninclined towards the adjacent disk, and a shield extending around theextended portion of said bushing for preventing material from enteringsaid bearings.

7. A bearing for a disk harrow spindle comprising a bracket having asemi-circular portion, a complementary cap secured to said semi-circularportion, two semi-circular wood bushings mounted between and having oneof their ends protruding beyond said cap and said semi-circular portion,an annular shield carried by said cap and said semi-circular portionspaced from and substantially enclosing the extended end of saidbushing, a spindle journaled in said bushing having an annular flatsurface engaging the entire end of said bushing on one side thereof andan inclined surface tapered towards the adjacent disk for directing thematerial away from the said bearings.

8. A bearing for a disk harrow spindle comprising a bracket having abearing supporting portion, a wood bushing mounted in said supportingportion, one end of said bushing projecting beyond said supportingportion, and a spindle journaled in said bushing and having a portionthereof engaging the major portion of the end of said bushing wherebythe whole end thrust wear is borne by the end of said bushing.

RUDOLPH J. ALTGELT. WILLIAM D. DEW'END.

